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Preview of Modern Web Checker

Modern Web Checker by Bert

Shows IPv6, TLS 1.3, and HTTP/3 status for the current website.

Experimental
Available on Firefox for Android™
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About this extension
This addon provides a traffic light icon and more detailed popup checking if the currently loaded site supports modern protocols such as IPv6, TLSv1.3 and HTTP3. Optional support to check for DNSSEC is also available.
Also includes a connectivity test to determine of IPv6 support is available on the client, or else all sites would show up without IPv6 creating confirmation bias.
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Permissions and data

Required permissions:

  • Control browser proxy settings
  • Access browser tabs

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.

Optional data collection, according to the developer:

  • Browsing activity
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More information
Version
0.1
Size
35.28 KB
Last updated
21 days ago (Jul 20, 2026)
Version History
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